# UGC 4904

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/UGC_4904
> Markdown URL: https://mediated.wiki/source/UGC_4904.md
> Source: https://en.wikipedia.org/wiki/UGC_4904
> Source revision: 1332107923
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Short description|Galaxy in the constellation Lynx}}
{{Infobox galaxy
| name = [UGC](/source/Uppsala_General_Catalogue) 4904
| image = UGC 4904 Sloan.png
| caption = UGC 4904, imaged by the [Sloan Digital Sky Survey](/source/Sloan_Digital_Sky_Survey)
| epoch = [J2000](/source/J2000)
| constellation name = [Lynx](/source/Lynx_(constellation))
| ra = {{RA|09|17|22.062}}<ref name=ned />
| dec = {{DEC|+41|54|39.70}}<ref name=ned />
| dist_ly = {{convert|27.74 ± 1.96|Mpc|Mly|abbr=on|lk=on|order=flip}}<ref name="ned" />
| z = 0.005571<ref name=Nordgren/>
| h_radial_v = 1665<ref name=Nordgren>{{cite journal|title=Close galaxy pairs in low and medium density regions: The southern sky|author1=Nordgren, Tyler E.|author2=Chengalur, Jayaram N.|author3=Salpeter, E. E.|author4=Terzian, Yervant |authorlink4=Yervant Terzian |journal=Astronomical Journal|volume=114|pages=913–931|date=1997|doi=10.1086/118523|bibcode=1997AJ....114..913N|doi-access=free}}</ref>
| group_cluster = 
| type = SABdm<ref>{{cite journal | title=A Catalog of Visually Classified Galaxies in the Local (z ∼ 0.01) Universe|author1=Ann, H. B.|author2=Seo, Mira|author3=Ha, D. K.|journal=The Astrophysical Journal Supplement Series|volume=217|issue=2|pages=27–49|date=2015|bibcode=2015ApJS..217...27A|doi=10.1088/0067-0049/217/2/27|arxiv=1502.03545|s2cid=119253507}}</ref>
| size = ~{{convert|9.58|kpc|ly|abbr=on|lk=on|order=flip}} (estimated)<ref name ="ned" />
| stars = 
| appmag_b = 15.0<ref name=ned>{{cite web | url= https://ned.ipac.caltech.edu/byname?objname=UGC+4904 | title=NED results for object UGC 4904 | accessdate=29 January 2017 | publisher=[National Aeronautics and Space Administration](/source/National_Aeronautics_and_Space_Administration) / [Infrared Processing and Analysis Center](/source/Infrared_Processing_and_Analysis_Center) }}</ref>
| appmag_v = 
| absmag_v = 
| size_v = 
| notes = Dwarf spiral galaxy with a supernova impostor which eventually exploded as an actual supernova
| names = {{odlist | CGCG= 209-044 | MCG= +07-19-054 | PGC= 26231}}<ref name=ned/>
| references = 
}}
{{Sky|09|17|22.062|+|41|54|39.70}}

'''UGC 4904''' is a [barred spiral galaxy](/source/barred_spiral_galaxy) in the constellation [Lynx](/source/Lynx_(constellation)).  Its velocity with respect to the [cosmic microwave background](/source/cosmic_microwave_background) is 1880 ± 15{{nbsp}}km/s, which corresponds to a [Hubble distance](/source/Hubble's_law) of {{convert|27.74 ± 1.96|Mpc|Mly|abbr=on|lk=on|order=flip}}.<ref name="ned" /> The first known reference to this galaxy comes from Part 2 of the [Morphological Catalogue of Galaxies](/source/Morphological_Catalogue_of_Galaxies), published in 1964, where it is listed as '''MCG +07-19-054'''.<ref>{{cite journal|bibcode=1964MCG...C02....0V | title=Morphological catalogue of galaxies. Part 2 | last1=Vorontsov-Vel'Yaminov | first1=B. A. | last2=Arkhipova | first2=V. P. | journal=Morphological Catalogue of Galaxies | date=1964 | volume=C02 }}</ref>

==Supernova==
thumb|left|Swift Ultraviolet/Optical Telescope image of SN 2006jc
On October 20, 2004, a [supernova impostor](/source/supernova_impostor) was observed by Japanese [amateur astronomer](/source/Amateur_astronomy) [Kōichi Itagaki](/source/K%C5%8Dichi_Itagaki)  within the galaxy. This same star may have transitioned from a [luminous blue variable](/source/luminous_blue_variable) star to a [Wolf–Rayet star](/source/Wolf%E2%80%93Rayet_star)<ref>{{cite web | title=Massive Star Burps, Then Explodes | url=http://chandra.harvard.edu/press/07_releases/press_040407.html | publisher=Univ. of California, at Berkeley | accessdate=April 4, 2007}}</ref> shortly before it was observed as blowing up as [supernova](/source/supernova) [SN 2006jc](/source/SN_2006jc) ([Type{{nbsp}}Ibn](/source/Type_Ib_and_Ic_supernovae), mag. 13.8)<ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2006jc | url=https://www.wis-tns.org/object/2006jc | publisher = [IAU](/source/International_Astronomical_Union) | access-date=13 November 2024}}</ref> on October 11, 2006.<ref>{{cite web | title=NASA – Supernova Imposter Goes Supernova | url=http://www.nasa.gov/centers/goddard/news/topstory/2007/supernova_imposter.html | publisher=NASA.Gov | accessdate=April 4, 2007}}</ref>
{{clear left}}

== References ==

{{reflist}}

== External links ==
* [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=UGC+4904 UGC 4904] in a [SIMBAD](/source/SIMBAD)
* [http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=UGC%204904 UGC 4904 in NASA's Extragalactic Database]
{{WikiSky}}
{{Lynx (constellation)}}

Category:Barred spiral galaxies
Category:Lynx (constellation)
04904
026231
Category:Dwarf spiral galaxies
Category:Magellanic spiral galaxies
+07-19-054

{{Barred-spiral-galaxy-stub}}

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Adapted from the Wikipedia article [UGC 4904](https://en.wikipedia.org/wiki/UGC_4904) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/UGC_4904?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.